package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.heima.article.entity.ApAuthor;
import com.heima.article.mapper.ApAuthorMapper;
import com.heima.article.service.IApAuthorService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.dto.ResponseResult;
import com.heima.common.enums.AppHttpCodeEnum;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * <p>
 * APP文章作者信息表 服务实现类
 * </p>
 */
@Service
public class ApAuthorServiceImpl extends ServiceImpl<ApAuthorMapper, ApAuthor> implements IApAuthorService {

    @Override
    public ResponseResult<ApAuthor> saveApAuthor(ApAuthor author) {
        // 模拟异常
        // int i = 1 / 0;
        // 参数校验
        if (author == null || author.getUserId() == null || author.getWmUserId() == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        // 保存文章作者
        // 去重判断,判断 user_id 是否存在
        LambdaQueryWrapper<ApAuthor> query = new LambdaQueryWrapper<>();
        query.eq(ApAuthor::getUserId, author.getUserId());
        ApAuthor one = this.getOne(query);
        // 存在的话,直接返回
        if (one != null) {
            return ResponseResult.okResult(one);
        }
        // 不存在,新增
        author.setCreatedTime(new Date());
        this.save(author);
        return ResponseResult.okResult(author);
    }
}
